Malicious PDF — malware analysis report

Static analysis result for SHA-256 514098acdaa47b29…

MALICIOUS

PDF

71.6 KB Created: 2021-01-22 00:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7610140e10677015b94073f524a3657d SHA-1: f94aba69ddf7bf4bbab4cc19062dd0c4c4f7ae45 SHA-256: 514098acdaa47b29014e34e3c3b2663cf31a1e2357fe9949ed63142d1136ded3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wb?keyword=airline%20pilot%20jobs%20usa PDF link annotation
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/068fc265d42e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fc9485e51e25.pdfIn PDF document text
    • https://tesetugunujogub.weebly.com/uploads/1/3/4/0/134040467/2710652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465128/normal_5ff5508a4506c.pdfIn PDF document text
    • https://site-1166618.mozfiles.com/files/1166618/makerbot_method_user_manual.pdfIn PDF document text
    • https://wafedegexusib.weebly.com/uploads/1/3/0/9/130969596/08ef75bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5ff08876cab9e.pdfIn PDF document text
    • https://site-1167925.mozfiles.com/files/1167925/block_breaker_game_free_download_for_mobile.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/tabodadupupevugub.pdfIn PDF document text
    • https://jikudirag.weebly.com/uploads/1/3/4/0/134040407/xexiragukokos-gapip-wutevupaxezu-fexotuku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465402/normal_5fcbd7a065705.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/betajudazo.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/8940487685.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/61728437364.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/sandesh_epaper_surat_today.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD29 5016 bytes
SHA-256: bf6deebb93b808e990db70d8db5d86c49c78e2ccc56f46a3fe53cef9ee7f2589
font_01_sfnt_off0000ee3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3F 10408 bytes
SHA-256: ba223ec2c273ceaa94f9b2895696632435d718e8a9e14b137df950f8e78ddbb0

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